14. Where are the race conditions in the following code ? How to prevent race conditions using mutex ? #define MAX PROCESSES 255 int number_of_processes = 0; /* the implementation of fork() calls this function */ int allocate_process () { int new_pid; } if (number_of_processes return -1; } == MAX_PROCESSES) else { /* allocate necessary process resources */ ++number_of_processes; return new_pid; } /* the implementation of exit() calls this function */ void release_process () { /* release process resources */ --number_of_processes;